I think that would be a goto to the reset vector adress 0x0000h.
Edit: In order to have full reset you must use the reset pin. But depending on how you write your software a goto to 0x0000 may be very close to a full reset

Wire one of your pins to MCLR, and pull it low. Remember to normally pull it high with a weak 1k resistor. That should do the job. I know the higher end PIC chips have an actual RESET instruction which resets all file registers to their default state, unfortunately yours is not one of them.